Machine for applying screw caps to containers



Oct. 13, 1953 J. HOHL ET AL MACHINE FOR APPLYING SCREW CAPS TOCONTAINERS 5 Sheets-Sheet 1 Filed Dec. 19, 1949 2 1 a 8 g .i 122 4 7 613 z E 1 m U l 4 q 1 r v w, w m 1 N m l 7 a l a 11 v. z 1|| N e 9 3 a 6 a7 MW v 7 0 4 9 7 z 6 z g It 8 z a 1 W JQ a 4 2 Z 1 w 9 W l 1 a 0 99 l m,/3 J 9 9 9 w 4 ii E d B .6 1 1 N N. T. w 1; m NHL 8 1 a .\MP1T.H :N/ a I4 a z w v I M 2 l I y a V 3mm zfoHNHoHL R-B.PIM

Oct. 13, 1953 J. HOHL ET AL 2,655,302

} MACHINE FOR APPLYING SCREW CAPS TO CONTAINERS Filed Dec. 19, 1949 5Sheets-Sheet 2 Oct. 13, 1953 J. HOHL ET AL 2,655,302

MACHINE FOR APPLYING SCREW CAPS TO'CONTAINERS Filed Dec. 19, 1949 5Sheets-Sheet 3 doHN H0111 1E. 12. P114 Oct. 13, 1953 J. HOHL ETALMACHINE FOR APPLYING SCREW CAPS TO CONTAINERS Filed Dec. 19, 1949 5Sheets-Sheet 4 mmwgw Oct. 13, 1953 J. HOHL ET AL MACHINE FOR APPLYINGSCREW CAPS TO CONTAIN ERS 5 Sheets-Sheet 5 Filed Dec. 19, 1949 PatentedOct. 13, 1953 2,655,202 'aPPLYING seasw oarsi wo GONTAINERSciir-mai-ation ethnic 19, 1949, Serial No. 133,734

fit (613226- 38) @ur invention relates 'tc a-machine-for-epplyuniformdegree of torque beiappliedin-tscrewmg the caps to scaling iposition,"so that all of -the caps are uniformly tight.

The torque must be sufiicieni; to insure aa, perfect seal, :butexcessive torque which would (cause damage :must be avoided. I

An object 10f the 'zpresentinvention-isto provide accurate :and reliablemeans for obtaining .such uniformity and thereby overcoming variousdifiiculties and-deficienoiesotiprionart machines.

For the attainment ofthisobiectahydraulic motor is employed fortighteningthe-capson'the containers, the motor being tdrivenbyiiuid-=sup- .plied at a predetermined. -pressure. Themotor is connectedthrough gearing :to a chuck which rotate the caps into sealing positionsI}he fluid pressure is such that-the motor is stalled when the cap hasbeen tig-htened to thedesired-dgree, the pressure being vadjustable sothatthe torque applied to the caps canine; adjusted. I

vThe use (of such. hydraulic system=-embodies important advantage overthe usual methods in which mechanical lclutchesaare .used. Wi'th thehydraulic motor, the -rstatic inertia oflthe moving parts is very small:so that inst'opping thechuck, the inertia is practically ne'g'lieible.This permits the tops to be tightenedv inarap'id.succession with auniformly applied torque. The-l-hydraulic fluid provides avery-efiective cushioninglwhenthecap is tightened. It also providesa-lsoft-lsteady-motion of the capstighteningimechanism free viromimpacts which tend to break the -n'loldedcap's.

*that theywill deliver approximately the same torques. ;In;;accordancewith the present invention employing hydraulic :means, :all of the-fluid motors in a unit are driven by fluid in a si ng'l'e supply lineand all'operate; at exactly the same pressure andthereiore deliver thesame torque to all of the cap-tightening chucks. I

i -A further advantage ofthe hydraulic motor is that it is equallyefdcient in applying large, as well-as small caps, -to-coxitainersandisI-readily adj-ustable-te any size cap, and degree of torqueappliedthereto by merely charging the pressure in thesuppiy line rbyadiustment-of the conventional automatic valve means employed for such IBP p, v

The present invention is herein illustrated as adapted for applyingscrew caps to bottles' havscrewethreaded necks and wil l'belsodescribed, vi t-beingunderstoodthat other types of containers and otherformsbfscreW-type caps maybe used withsuch maohine land within the scopeof our invention. "By the term screw-type cap is meantwany cap which isapplied to the container by-screwing-orspirally-rotating thecap to bringit tosealing position, the capandcontainer neck having cooperating.surfaces by which the cap is drawn spirally downward r-irito sealingposition eenati- .The machine comprises means .-for' advancing thecontainers seriatini tealcap-rcivin station .at which caps are faplpliedto the bottle necks and .screvved ligh tly interposition. .Each bottlewith a cap thus applied is then indexed to asecond or \cap-tighteni'ngstat-io'nat which the cap is given a- -urther -rota tion tobrihgai't'iinto sealing posi- An important :featureof theinventionmelates to the accurate control-o f;.-the gtorque permitted bythe use of thehydraulicsystemandobtained by controlling the fluidpressure .suppliedto the motor, which pressure I can-be varied and-canQbe vheld with-great accuracyv-iand eases -Imthismanner difiicultiesinherent-in-conventional cappers with a constant variation of the-torques delivered.

-A vfurther obieotionto conventiona'la eappers with-multipleheadsi-isflue to theiact thatit-lis extremely difiicult all l'-Ihe meansforbringing the bottles to said stationsv-includes a pairofindxing-disks or wheels inthe form of-star wheels which are rotated:intermittently step .by' step-to advance each bot- "tle first to thecap-receiving station at whicha vcap is-applied, then to thecap-tightening station Where the :sealing operation takes place, andthereafter discharging the sealed bottle. The

t-caps are broughtinsuccession to the cap-receiv- -being devel ped tbringthe" ye'rtic'a1 planes of the section line mt a1sin 1e51ane;

Fig. 2 is a sectional plan view at the line 2-2 on Fig. l, on a largerscale;

Fig. 3 is a section at the line 3-3 on Fig. 1;

Fig. 4 is a fragmentary view of a Geneva drive for intermittentlyadvancing the bottles and caps;

Fig. 5 is a fragmentary sectional plan view on a comparatively largescale, of the cap indexing disk and cap-gripping devices;

Fig. 6 is a fragmentary sectional elevation at the line 6-6 on Fig. 5,showing the suction chuck for holding the caps and applying them to theFig. 8 is a sectional view showing the cap tightening chuck also shownin Fig. 7,'but on a" larger scale than in Fig. 7;

Fig. 9 is a section at the line99 on Figs. 7 and 8, the section line 1-4on Fig. 9 indicating the planes of section of the chuck as shown in Fig.7; and v Fig. 10 is an elevational view of the means for clamping thebottles at the cap-tightening station.

The machine is mounted on stationary base l2 from which rises a pair ofposts [3 and I4. The machine framework includes a casing l5 (Fig. 1)within which certain moving parts of the machine are mounted. Saidcasing includes a lower plate I6 which is supported on the posts l3 andI4 and may be adjustable up and down thereon to adapt the machine tocontainers of different heights.

The containers, herein shown as bottles H, are closed and sealed withcaps I3. As shown in Fig. 6, each cap comprises a flat top and adepending circumferential skirt I9 formed on the inner surface with ascrew thread which cooperates with a screw thread 20 formed on thebottle neck. A pair of star wheels 2| and 22 are keyed to a verticalshaft 23 which is rotated intermittently to advance each bottle first toa cap-applying station A at which the cap is loosely applied to thebottle and then to the cap-tightening station B. The two star wheels areattached to theshaft 23 as shown in Fig. '7 by means of hubs 24, eachcarrying a key 25 which fits in a vertical spline or groove 28 in theshaft and is clamped by a set screw 21. By loosening the set screws, thestar wheels may be individually adjusted to accommodate bottles orcontainers of different heights. A tubular shaft 28 (Fig. 1)telescopically connected with the shaft 23 provides an adjustableextension of the latter. The section 28 has a driving connection withthe shaft 23 through a key 29 slidable in the spline groove 2'5. Theshaft 28 is journaled in a cylindrical bearing sleeve 36 depending fromthe plate IS.

The star wheel shaft 23 is rotated intermittently by an electric motor3| (Fig. 1) having driving connection'with the shaft through gearingwhich will now be described. The motor 3| is geared to a driving belt 32which drives a pulley 33 on a vertical shaft 34 journaled in the casingi5. A pinion 35 keyed to the shaft 34, drives a gear 36 bolted to a hub31 journaled by means of ballbearings 38 in the frame plate IS. The gear36 has driving connection with the shaft 28, 23, through a Geneva drive(Figs. 1 and 4) of conventional form, comprising a disk 40 keyed to theshaft 28 and formed with radial slots 4| which are engaged by a pin 42on the gear 36. The continuous rotation of the gear 36 imparts step bystep movement to the shaft 28 and star wheels 2|, 22. Each star wheel asshown, comprises eight points, spaced at angular distances of 45. Eachstep movement of the driving disk 40 advances the star wheel through anangle of 45, thereby advancing a bottle from station A to station-B.

The caps i8 are fed either by hand or automatically, to a carrier disk43 by which they are advanced to Station A, each cap being broughtdirectly over and into register with the bottle at said station. Thedisk carrier 43 (Figs. 2, 3, and 5) is formed with recesses or pockets44 at intervals aroundits periphery, each pocket being of a size toreceive a bottle cap l8. The caps are clamped to the disk by means ofgripping devices, each comprising a gripping jaw 46 attached to a rockarm 41 fixed to a pivot pin 48 journaled in the disk. A second rock arm53 keyed to the pin 48 carries a cam follower roll 50 which runs on astationary cam disk 5| mounted on the underside of a plate 52 (Fig. l).The plate 52 is attached to the posts i3 and I4 by means of clampingcollars 53. The clamping jaw 46 is held in cap-gripping position by acompression coil spring 54.

The carrier 43 is rotated as presently described, to bring each pocketto three stations in succession, namely, a cap-receiving station anintermediate station 2, and the cap-applying station A. The cam disk 5|is formed with a cam lobe 55 so positioned that when the carrier disk 43is at rest, the gripping jaw 48 at the receiving station I is heldretracted by the cam, thus permitting a cap l8 to be placed in thepocket 34 while the disk is at rest. Upon the commencement of the nextindexing movement of the disk, the cam roll 50 runs off the cam lobe 55so that the cap is gripped.

The disk 43 is keyed to the lower end of a vertical shaft 56, the upperend of which is journalecl in bearings 51 on the underside of the plateIt. The shaft 56 is rotated intermittently in synchronism with theindexing movements of the star wheels, being driven from the shaft 23through gearing including a sprocket chain 33 trained over sprocketgears 53 and 53 keyed to the shafts 23 and 56 respectively. The gearsare so proportioned that the cap-carrying disk .3 is rotated throughduring eachstep rotation of the star wheels through 45, so that duringeach step movement, a cap I8 and bottle I? are brought into register atstation A.

The mechanism for applying the cap to the bottle and lightly screwing itinto position is as follows: A cap-gripping chuck 6| (Figs. 1 and 6) inthe form of an inverted rubber cup is adapted to grip the cap bysuction, push the cap downward out of the pocket 44 onto the bottle neckand then rotate the cap and screw it lightly into position. For thispurpose the chuck 5| is attached to the lower end of a vertical chuckspindle 62 mounted for rotation and for up and down -movement. Avertical slide bar 63, mounted for up and down movement in guide rails64 attached to a stationary cross bar 65, has connection with thespindle for lifting the latter. Such connection includes a head 66attached to said slide bar and a collar 65 keyed to the spindle B2.

The slide bar 63 is moved up and down in timed relation to the indexingmovements of the cap-carrying disk 43, by means of a lifting device inthe form of a cylindrical cam block 6! which'is movable up and down in acylindrical to contact the bottle cap when the chuck is lowered. The pinis free for limited up-and-down movement relative to the chuck and itsshaft and is connected for rotation with the chuck by means of a crosspin I2I extending through slots I22 in the shaft I I2, said slotslimiting the up-and-down movement of the pin I20.

The adapter II I is constructed to permit lateral shifting movement ofthe chuck relative to the shaft H2 horizontally in any direction. Thispermits the chuck to adapteditself to any bottle cap and bottle whichmay not be in exact vertical alignment with the chuck spindle H2. Theadapter comprises an upper plate I23 and a lower plate I24 boltedtogether and providing a housing for ballbearings. A flanged sleeve I25screw threaded onto the chuck member IIG connects the chuck to theadapter and permits lateral movement of the chuck relative to theadapter in any direction. Within the housing formed by members I23 andI24, are disks I27, each formed with diametrically opposite radialpockets or recesses I28 in its upper face (see Fig. 9) for bearing ballsI29 and similar pockets I28 in its under face, permitting relativelateral movement of said disks, and of the chuck relative to theadapter, thereby permitting lateral shifting of the chuck for adjustingitself to the position of the bottle cap if the cap is off centerrelative to the chuck shaft H2.

The chuck I I is rotated for tightening the cap by power suppliedthrough a hydraulic motor I30 (Figs. 1 and 7 which may be a hydraulicpump of standard construction. The motor comprises a driving pinion I3Irunning in mesh with a gear wheel I32 keyed to the chuck shaft H2. Thehydraulic pressure of the pump driving fluid is accurately controlled bysensitive relief valves which are adjustable to regulate the pressure.The adjustment is such that when the cap is tightened to the desireddegree, the hydraulic motor is stalled. By this means a uniformpredetermined maximum torque is developed for each cap-tighteningoperation so that all the caps are uniformly tightened.

Operation A rsum of the operation is as follows: the star wheels 2I, 22and cap-carrying disk 43 are simultaneously rotated step by step, eachstep rotation bringing a cap and bottle to the capapplying station A andsimultaneously advancing a bottle with a cap applied thereto, to thecaptightening station B. When a bottle and cap are brought to rest atthe station A, the cam 61 operates to move the chuck spindle 62 downwardand bring the suction cup or chuck 6! into contact with the cap,gripping it by suction, then forcing it downward out of the carrier 43onto the bottle neck. The chuck spindle at this time is being rotated bythe friction driving belt 83 (Fig. 2) so that the cap when it makescontact with the bottle, is screwed downward until it seats on the topof the bottle and is thereby arrested, the belt 80 then slipping withoutsufficient torque being developed to seal the cap on the bottle.

When the bottle with the cap thus loosely applied thereto, is advancedto the cap-tightening station B, the clamp 90 is actuated to clamp thebottle tightly to the star wheel. The chuck IIB is then lowered andfirmly grips the bottle cap while the chuck is being rotated by thehydraulic motor I30. This operates to tighten the cap thereby sealingthe container. When the predetermined degree of torque has been builtup,

and the cap tightened to the desired degree, the resistance to furtherrotation stalls the hydraulic motor. This torque is accuratelydetermined by regulating the pressure of the driving fluid so that allof the bottle caps are tightened to a uniform degree. Although theoperation has been described as sealing the caps on the containers, themachine may be used for applying and tightening caps which are notadapted or intended to hermetically seal the containers.

Modifications may be resorted to within the spirit and scope of ourinvention as defined in the appended claims.

We claim:

1. A machine for applying screw caps to containers, comprising acontainer advancing device mounted for rotation about a vertical axis,means for rotating said device intermittently step by step and therebybringing containers singly and in succession to a cap-applying stationand advancing the containers one by one from the said cap-applyingstation to a cap-tightening station, a cap carrier mounted for rotationabout a vertical axis, interconnecting gearing between the cap carrierand the container advancing device by which the cap carrier is rotatedstep by step concurrently with the step movements of the containeradvancing device, cap holding devices on the cap carrier positioned andarranged to bring the caps in succession to the cap-applying station andposition the caps over and in register with the containers at saidstation as the cap carrier is rotated about its vertical axis, means fortransferring the caps from said carrier downwardly onto the containersat the cap-applying station, and means at the cap-tightening station togrip the caps and rotate them to sealing position on the containers.

2. A machine for applying screw caps to containers and tightening thecaps, said machine comprising a cap-tightening chuck, a vertical shaftmounted for rotation about its axis and for up-and-down movement, meansconnecting the chuck to the lower end of the shaft, means forpositioning a container with a cap loosely mounted thereon in a positionbeneath and in register with the chuck, mechanism for lowering saidshaft and chuck and causing the chuck to grip the cap, means forrotating said shaft and chuck comprising a hydraulic pump and gearingforming driving connection between the said pump and said shaft, saidmechanism including spring means operating independently of powersupplied by the hydraulic pump to maintain the chuck in grippingengagement with the cap during said rotation by the hydraulic pump, andmeans for lifting the shaft and chuck.

3. The combination set forth in claim 2 wherein the means for liftingand lowering the shaft and chuck comprises a lifting device positionedover said shaft, means for moving the lifting device up and down, andmeans providing a lost motion connection between the said shaft andlifting device, permitting limited up-and-down movement of the shaftrelative to the lifting device, the said spring means comprising acompression spring arranged to apply downward pressure to the shaft andchuck for causing the latter to grip the cap when the lifting device islowered.

4. A machine for capping containers comprising means for positioning thecontainers at a cap-tightening station, means for clamping thecontainers in a fixed position at said station, said clamping meanscomprising a clamping device mounted for; movement: towardand containerat. said station. a stem, attached to. the clamping (lattice. and extnding in the; direction of its; said. movement;. a. carrier in saidstep); is supported. aapainof .p'arallelilinks each fliiloted; at: one.end to. said carrier and at. its nnosite "endpivoted to; a stationarysupport, a of: to le. links, one of which-is. pivoted: to said carrier,the; other of which ::piil0tfidi to. the stationary support,means for:actuating theitogg le for withdrawing, the clamp from the container,and; a, compression spring interposed between the said carrier andclamp. for moving thelatter'to clamping: position. i

5.. A machine for applyingrscreivietype capato containers:andtig-htening the capsycompristng a cam-applying chuck and acap-tightenihg-chuck, each mounted for rotation about-.a verticah and:for up, and down movement, said chucks bfih f spaced apart: laterallyand positioned; res Snectiyelyat a. capeapplying. station and: a cape tihtening station, means for the-cons tainers singly and in succession tothevcapeapplya ing station and for concurrently moving the caps tothecamapplying station and positioning each cap over and in registerwith a container at said station with the container and cap beheaththecap-applying chuck, means; lowering the cap-applying chuck and causingit to grip the can nd move the c p o ward o otheacontainer, a motor,means providing a friction, drieing'; connection between the motor andthe epapplying chuck for rotating'the chuck and, thereby screwing thecap loosely Q the container, means; for transferring each foo ainer withthe thereon to the cap-tightening stationwlth the containferand its capbeneath; and in register with the cap-tightening chuck, means forlowering the latter causingin tbfig'rip the cap, a second motor, meansproviding a driving 0.011":- necti'on between said second motor and thecaptighterfing chuck for rotating the latter and thereby tightening thecap on thecontainer to a predetermined degree of tightness at which themotor is stopped by the resistance of the cap to further rotation on thecontainer.

6. A machine for applying screwcaps to containers and tightening thecaps on the containers, comprising a cap-applying chuck and acaptightening chuck, a chuck lifting device positioned over thecap-tightening chuck and mounted for up-and-down movement, meansproviding a lost motion connection between said device and thecap-tightening chuck for lifting the latter device when said device ismoved upward and permitting a limited downward movement of the saiddevice relative to the chuck when said device is lowered, a motor, meansproviding driving connections between the motor and said lifting devicefor moving the latter up and down, a spring means for applying ayielding downward pressure to the cap-tightening chuck during the finaldownward movement of said lifting device while the chuck is engaged withthe cap, means providing an operating connection between said liftingdevice and the cap-applying chuck including a connector operativelyconnected to said lifting device and moved up and down therewith, andmeans providing a lost motion connection between said connector and thecapapplying chuck operative to lift the chuck when said connector ismoved upwardly and permitting a limited downward movement of theconnector relative to the chuck when said connector is lowered, andspring means interposed between said connector and the cap-applying I6chnQhereomyins; a, ielding downward pre sure onv the. can when said onnctor law redi. a

7. The machine as described in claim fiwherein sa dehn hli tinad yieconsists or a eylindtical cam mounted f r: rotat on abonta vertical axisnd weed; to t e-moton; said axisbein -in, line theeemtle e is: t e; cnnection bet e asaid ehuehl. admire and Gabe-tight;- ening chuckcomprising a chuqh'spindle, rotatable about Said axis; ndependentlyof;therotatio'a f said devic a. s 00nd mfii iol'i. and means providin 1.1 212% connec ion jbetween the's'eoond mo or and chuck spi d e tor rotatingthe att n.

8... a. machine as; defined inv claim, said com nector omn si g: a slidmem er nn t d to mor up and downw h. aid: fittin device a check spindleto which the; can-applyin chuck is-atta h d and hav n a lost; motionconnection wit said. connector p rmitt n limited nix-:a'irda down oitz echeekrelat v to s id c n nectar, s r n -means interposed betweenthey'c'an p lyin ime and said connector iolz apply n a yie di g dqvmwammeasure. to. the ch k w said con ector s lowered; and means. for rotatinsaid. lastem t ohed chuck s indl and ch ka. A m chine as: defined:imelaim 6:, said cone .66. 03 comprisin slide member connected to more aand? down with said liftin device a chuck-spindle to which the canapplying chuck 1S; t ached-and havin a. lost motion connection wit saidconnector permitting limited upaande down movementof the. chuck;relative tos'aid'cona. heaters. $1 2 means interposed between thercapaapplyin chuck and said connector for applying a y eldin downwardpressure, to chuck when said connector is lowered, and means for rotate.said last-.mentioned; chuck spmdie. and chuck.

' '11 a; ma hine. for app g s rew t-yp aps to. containers-, a cancarrier mounted for rotation al ght a. verti al axis, a. can holdingdevice mounted on said carrier, means for holding a container stationaryat a cap-receiving station, means for rotating said carrier and therebybringing said cap holding device with a cap held thereby into registerwith the container at said station, a chuck positioned directly oversaid cap and container at the cap-receiving station and mounted forvertical movement, means for lowering the chuck while directly over andin register with the cap and container at said station and attaching itto the cap and transferring the cap from said carrier downwardly ontothe container, and means for rotating the chuck and screwing the caponto the container.

' 11. The combination set forth in claim 10 wherein the means fortransferring the cap to the container comprises a vertical chuckspindle, the chuck being attached at the lower end of the spindle, meansfor attaching the chuck to the cap, and means for lifting and loweringthe spindle and chuck and thereby transferring the cap from the carrieronto the container by the lowering of the spindle, the means forrotating the chuck spindle comprising a friction drive by which thetorque applied to the chuck is limited to a predetermined amount.

12. The combination set forth in claim 11 wherein the means for liftingand lowering the chuck spindle includes a cam. a slide bar mounted forvertical reciprocating movement and operatively connected to the cam andactuated thereby, means providing a lost motion connection between saidslide bar and the chuck spindle for lifting the latter, said connectionincluding a 11 coil compression spring mounted on the spindle andoperating to lower the chuck and apply the cap to the container whensaid slide bar is lowered.

13. The combination set forth in claim 10 wherein the chuck comprises avacuum cup adapted to seat on the cap, and means for exhausting the airfrom said cup when the latter is lowered onto the cap and therebycausing said cup to grip the cap.

- 14. A machine for applying screw caps to containers comprising ahorizontal cap-carrying disk. a vertical shaft on which the disk ismounted, said disk having pockets in its periphery to receive the caps,gripping jaws mounted on the disk adjacent to said pockets, springsarranged to move the jaws into position to grip caps in said pockets,means for rotating said disk and thereby bringing said pockets insuccession above and in register with containers at a cap-receivingstation, a stationary cam, means actuated by the cam to swing thegripping jaws to a retracted position at the cap-receiving station,means for transferring the caps to containers at said station, saidpockets with the caps therein being brought to said station insuccession by the said rotation of the cap carrier, means forpositioning a container at said station with the container beneath andin register with a cap at said station, a chuck mounted for up-and-downmove- 3 ment at said station and positioned over the cap when the latteris held by the carrier at said station, means for lowering the chuck andthere-' by causing it to engage the cap and carry it downward out of thecarrier pocket and onto the container therebeneath, and means forrotating the chuck and thereby screwing the cap onto the container.

15. A machine for applying screw caps to containers comprising acap-carrying disk mounted for rotation about its axis, said disk havingan opening extending therethrough and forming a 12 pocket to receive thecaps, cap gripping means mounted on the disk for rotation therewith andcomprising a gripping jaw positioned adjacent to said pocket and springmeans arranged to move the jaw into position to grip and hold a cap insaid pocket, means for rotating the disk and thereby bringing the saidpocket to a capreceiving station, and means mounted separately from thedisk and operable to move the said gripping jaw to a retracted positionas said pocket is brought to the cap-receiving station, means fortransferring acap from said pocket to a container at a transfer station,including a chuck and a container holding device, the latter arranged tohold a container at said station with the chuck and container positionedat opposite sides of the disk and in register with the said pocket andcap therein, and means for imparting to the chuck a straight-linemovement by which it is brought into engagement with the cap in saidpocket and by a continuation of said movement carries the cap intoengagement with the container.

JOHN I-IOI-IL. RICHARD A. PIM.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 1,760,859 Lach May 27, 1930 1,839,918 Gustafson Jan. 5, 19322,031,735 Risser Feb. 25, 1936 2,042,733 Risser June 2, 1936 2,130,317Clarke Sept. 13, 1938 2,202,302 Sickel May 28, 1940 2,292,146 MeunierAug. 4, 1942 2,506,8 9 Sydow May 9, 1950 FOREIGN PATENTS 40 NumberCountry Date 470,829 Great Britain Aug. 23, 1937 489,457 Great BritainJuly 27, 1938

